Version Detection based on past TCP/UDP scan results

["Hyper 4S" <hyper4s () hotmail com>]

All,

assuming we have the results (eg in greppable format) of a normal TCP/UDP 
portscan, is it possible to version scan (-sV) the found open ports, without 
repeating this TCP/UDP scan?

E.g. we have "output", the result of the scan "nmap -sS -sU -p0-65535 -oG 
output [host]"

After having run this scan, we decide we would like to do version detection 
on all found ports listed in "output", as "nmap -sS -sU -sV -p0-65535 
[host]" would give us by rescanning the host.

Is there a way to speed this up by skipping this redundant pre-version 
detection scan, and relying on the portscan results found during an earlier 
run?

Thanks!

H.

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